< dependencies> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> </ dependency> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> </ dependency> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> </ dependency> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> < optional> </ optional> </ dependency> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> < scope> </ scope> </ dependency> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> </ dependency> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> < version> </ version> </ dependency> </ dependencies> server :
port : 9001
eureka :
instance :
hostname : localhost
client :
register-with-eureka : false
fetch-registry : false
service-url :
defaultZone : http: //${ eureka.instance.hostname} : ${ server.port} /eureka
package com. sun. springcloud ;
import org. springframework. boot. SpringApplication ;
import org. springframework. boot. autoconfigure. SpringBootApplication ;
import org. springframework. cloud. netflix. eureka. server. EnableEurekaServer ;
@EnableEurekaServer
@SpringBootApplication
public class EurekaApplication {
public static void main ( String [ ] args) {
SpringApplication . run ( EurekaApplication . class , args) ;
}
}
< dependency> < groupId> </ groupId> < artifactId> </ artifactId> </ dependency> server :
port : 10001
spring :
application :
name : member- service- provider- 10001
eureka :
client :
register-with-eureka : true
fetch-registry : true
service-url :
defaultZone : http: //localhost: 9001/eureka
< dependency> < groupId> </ groupId> < artifactId> </ artifactId> </ dependency> server :
port : 81
spring :
application :
name : member- service- consumer- 81
eureka :
client :
register-with-eureka : true
fetch-registry : true
service-url :
defaultZone : http: //localhost: 9001/eureka
简单来说Eureka就两个功能，发现服务，注册服务！ 基本流程就是会员中心启动之后将自己的信息注册到Eureka Server（注册服务），服务消费者启动之后通过Eureka Server来发现服务（发现服务），得到会员中心的调用地址，然后通过rpc远程调用
服务在注册之后会不断地向服务端发送心跳，正常情况下如果90s内没有心跳，则服务端会认为这个客户端down掉了，就会清除记录 但是一旦自我保护机制开启，即使90s内没有心跳，也不会请求记录 server :
port : 9001
eureka :
instance :
hostname : localhost
client :
register-with-eureka : false
fetch-registry : false
service-url :
defaultZone : http: //${ eureka.instance.hostname} : ${ server.port} /eureka
server :
enable-self-preservation : false
eviction-interval-timer-in-ms : 2000
server :
port : 10001
spring :
application :
name : member- service- provider- 10001
datasource :
type : com.alibaba.druid.pool.DruidDataSource
url :
username :
password :
mybatis :
mapper-locations : classpath: mapper/*.xml
type-aliases-package : com.sun.springcloud.entity
eureka :
client :
register-with-eureka : true
fetch-registry : true
service-url :
defaultZone : http: //localhost: 9001/eureka
instance :
lease-renewal-interval-in-seconds : 1
lease-expiration-duration-in-seconds : 2
< dependencies> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> </ dependency> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> </ dependency> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> </ dependency> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> < optional> </ optional> </ dependency> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> < scope> </ scope> </ dependency> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> </ dependency> < dependency> < groupId> </ groupId> < artifactId> </ artifactId> < version> </ version> </ dependency> </ dependencies> server :
port : 9002
eureka :
instance :
hostname : eureka9002.com
client :
register-with-eureka : false
fetch-registry : false
service-url :
defaultZone : http: //eureka9001.com: 9001/eureka/
server :
port : 9001
eureka :
instance :
hostname : eureka9001.com
client :
register-with-eureka : false
fetch-registry : false
service-url :
defaultZone : http: //eureka9002.com: 9002/eureka/
package com. sun. springcloud ;
import org. springframework. boot. SpringApplication ;
import org. springframework. boot. autoconfigure. SpringBootApplication ;
import org. springframework. cloud. netflix. eureka. server. EnableEurekaServer ;
@SpringBootApplication
@EnableEurekaServer
public class EurekaApplication9002 {
public static void main ( String [ ] args) {
SpringApplication . run ( EurekaApplication9002 . class , args) ;
}
}
由于上面配置的两个Eureka服务使用的是域名eureka9001.com和eureka9002.com 所以需要配置hosts文件
这样eureka9002.com和eureka9001.com都表示127.0.0.1了 如果这里不能直接修改就把文件复制一份在别的地方修改一下然后覆盖这个文件即可 注意：你如果现在开的代理服务器，hosts文件是不生效的！
server :
port : 9001
eureka :
instance :
hostname : eureka9001.com
client :
register-with-eureka : false
fetch-registry : false
service-url :
defaultZone : http: //eureka9002.com: 9002/eureka/
server :
port : 9002
eureka :
instance :
hostname : eureka9002.com
client :
register-with-eureka : false
fetch-registry : false
service-url :
defaultZone : http: //eureka9001.com: 9001/eureka/
server :
port : 81
spring :
application :
name : member- service- consumer- 81
eureka :
client :
register-with-eureka : true
fetch-registry : true
service-url :
defaultZone : http: //eureka9001.com: 9001/eureka/, http: //eureka9002.com: 9002/eureka/
server :
port : 10001
spring :
application :
name : member- service- provider- 10001
eureka :
client :
register-with-eureka : true
fetch-registry : true
service-url :
defaultZone : http: //eureka9001.com: 9001/eureka/, http: //eureka9002.com: 9002/eureka/
server :
port : 81
spring :
application :
name : member- service- consumer- 81
eureka :
client :
register-with-eureka : true
fetch-registry : true
service-url :
defaultZone : http: //eureka9001.com: 9001/eureka/, http: //eureka9002.com: 9002/eureka/
server :
port : 10001
spring :
application :
name : member- service- provider- 10001
eureka :
client :
register-with-eureka : true
fetch-registry : true
service-url :
defaultZone : http: //eureka9001.com: 9001/eureka/, http: //eureka9002.com: 9002/eureka/
@GetMapping ( "/member/consumer/discovery" )
public Object discovery ( ) {
List < String > = discoveryClient. getServices ( ) ;
for ( String service : services) {
log. info ( "服务名小写={}" , service) ;
List < ServiceInstance > = discoveryClient. getInstances ( service) ;
for ( ServiceInstance instance : instances) {
log. info ( "id={}, host={}, port={}, uri={}" , service, instance. getHost ( ) , instance. getPort ( ) , instance. getUri ( ) ) ;
}
}
return services;
}
